Reaction of Mono-, Di-, and Trichloronitrobenzenes with<i>N</i>-Methyl Substituted Cyclic Tertiary Amines under High Pressure
作者:Toshikazu Ibata、Muhong Shang、Tetsuo Demura
DOI:10.1246/bcsj.68.2717
日期:1995.9
The reactions of mono-, di-, and trichloronitrobenzenes with 1-methylpyrrolidine under high pressure gave products of demethylation and ring-opening through a quaternary pyrrolidinium chloride intermediate formed by the SNAr reaction. On the other hand, the reactions with 1-methylpiperidine and 4-methylmorpholine gave only demethylation products. The selectivities of the reactions of 1-methylpyrrolidine
Nucleophilic Substitution Reaction of Aromatic Chlorides with Cyclic Tertiary Amines under High Pressure
作者:Toshikazu Ibata、Muhong Shang、Tetsuo Demura
DOI:10.1246/cl.1994.359
日期:1994.2
The reaction of p-chloronitrobenzene with N-methylpyrrolidine under highpressure gave demethylation product and ring opening products through quaternary ammonium chloride intermediate formed by the SNAr reaction. On the other hand, the reactions with N-methylpiperidine and N-methylmorpholine gave only demethylation products. The reactions of o-chloronitrobenzene and 2,4-dichloronitrobenzene with above
The Nucleophilic Substitution Reaction of<i>p</i>-Chloronitrobenzene with<i>N</i>-Substituted Cyclic Amines under High Pressure
作者:Toshikazu Ibata、Mu-Hong Shang、Tetsuo Demura
DOI:10.1246/bcsj.68.2941
日期:1995.10
An aromatic nucleophilicsubstitution (SNAr) reaction of p-chloronitrobenzene with N-substituted pyrrolidines under highpressure gave p-pyrrolidinonitrobenzene and ring-opening products through quaternary ammonium salt. The selectivity of dealkylation and ring-opening depends on the electronic and steric factors of N-substituents. The reactions with N-methylaziridine and N-methylazetidine gave ring-opening
对氯硝基苯与 N-取代的吡咯烷在高压下进行芳香亲核取代 (SNAr) 反应,通过季铵盐得到对-吡咯烷基硝基苯和开环产物。脱烷基和开环的选择性取决于 N 取代基的电子和空间因素。与N-甲基氮丙啶和N-甲基氮杂环丁烷的反应产生开环产物而没有提供任何脱甲基产物。